/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode(int x) : val(x), next(NULL) {}
 * };
 */
class Solution {
public:
  void deleteNode(ListNode* node) {

    ListNode *p = node->next;
    swap(node->val, p->val);
    node->next = p->next;
    delete p;
    p = nullptr;

  }
};